More than a head ornamentSourced
A nearly solid casque is used in male clashes
The helmeted hornbill has a nearly solid casque above its bill, unlike the structure in other hornbills. Males use it in head-to-head combat. The prominent feature has a behavioral role beyond the bird’s distinctive outline.
The visible structure participates in the contest.
Summary / translation: Unbubly · CC BY-SA 4.0
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Helmeted hornbill · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-05